Recent content by Valce

It looks like this atm: I tested it by connecting the input of the 7414 straight to ground, and the buzzer correctly did not turn on at all. I think the problem is with my photoresistor, but not sure :( Will, alas, need to buy another photoresistor.-V PS: Thanks for your help :) I'll be sure...

Thank you so much for your help - I kinda got it to work! Unfortunately, instead of switching between 'on' when there is light and 'off' when there's very little light, the buzzer kind of alternates between 'on' when there is light and 'quiet but still on' when there isn't. Looking at my...

Thanks for the tips - I'll give it a try and hope nothing explodes on me ;) I don't really have a proper power supply though so I'll have to make do with a 9V battery... For the schmitt trigger, I ended up grabbing a 7414 hex schmitt inverter. I may run out of alligator clips for this (my...

Thanks for the quick reply - I'll try my best :) 1. Fixed (sort of... not exactly in standard format) 2. Can I represent ground connections in the rest of the circuit by having wires go into the negative end of the power source/battery? Sorry, not certain of the standards for this :( 3...

Don't know if I can post this sort of thing here - apologies if it is not permitted/in the wrong place! But just for fun I'm trying to build a light-activated buzzer. Function: Light goes on, voltage at the divider of the first circuit passes threshold for Schmitt trigger (U1), causes...

Thanks! By the way, should I be focusing more on wave or electromagnetic optics to understand how a monochromator works?

Hey! I'm looking for a textbook that talks about monochromators and the physics behind them to some extent. I've already started a general Photonics book along with some supplements, but my prof tells me I'll need to get something more specific to monochromators as well. Any assistance would...

Thank you! :smile:

Ain't sure... But yes. Have you come across the Solubility Constant (Ksp)? Ksp's of soluble compounds tell you what concentration will dissociate (and thus what concentration will remain as a precipitate) If the Ksp's of the 2 compounds are different AND they share a common ion, then...

First of all, um, do electrons actually spin (in the classical sense)? If not, how do they possesses angular momentum? From their orbit around the nucleus?? And how is all of that related to magnetism? (I.E. why does a spinning charged body interact with a magnetic field?) I've read some...

Having a little trouble understanding electromagnetic induction... Do you produce more voltage when magnets are 'in series' or 'parallel?' I realize those might not be orthodox terms, so I'll try describe what I mean in words: Say I have a few small permanent magnets to generate a current...